<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch" label-width="100px">
      <el-form-item label="公告的标题" prop="title">
        <el-input
          v-model="queryParams.title"
          placeholder="请输入公告的标题"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['business:news:add']"
        >新增
        </el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="el-icon-edit"
          size="mini"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['business:news:edit']"
        >修改
        </el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="el-icon-delete"
          size="mini"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['business:news:remove']"
        >删除
        </el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="warning"
          plain
          icon="el-icon-download"
          size="mini"
          @click="handleExport"
          v-hasPermi="['business:news:export']"
        >导出
        </el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>
    <el-table v-loading="loading" :data="newsList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center"/>
      <el-table-column label="新闻的标题" align="center" prop="title"/>
      <el-table-column label="新闻的显示顺序" align="center" prop="sort"/>
      <el-table-column label="新闻的内容" align="center"  show-overflow-tooltip>
        <template slot-scope="scope">
          <el-link type="success" slot="reference" @click="reviewNews(scope.row)">预览</el-link>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['business:news:edit']"
          >修改
          </el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['business:news:remove']"
          >删除
          </el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改新闻列表对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="1200px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="120px">
        <el-form-item label="新闻的标题" prop="title">
          <el-input v-model="form.title" placeholder="请输入新闻的标题"/>
        </el-form-item>
        <el-form-item label="新闻的显示顺序" prop="sort">
          <el-input-number v-model="form.sort" :min="0" placeholder="新闻的显示顺序"></el-input-number>
        </el-form-item>
        <el-form-item label="新闻的内容" prop="context">
          <v-md-editor
            v-model="form.context"
            :disabled-menus="[]"
            @upload-image="handleUploadImage"
            height="calc(100vh - 150px)"></v-md-editor>
        </el-form-item>
        <el-form-item label="新闻的发布时间" prop="context">
          <el-date-picker
            disabled
            size="small"
            v-model="form.createTime"
            type="datetime"
            value-format="yyyy-MM-dd HH:mm:ss"
            placeholder="发布时间" clearable="">
          </el-date-picker>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>

    <el-dialog :title="title" :visible.sync="openReview" width="1000px" append-to-body>
      <div class="releaseTime">
        发布日期: {{choiceNews != null? choiceNews.createTime: ''}}
      </div>
      <v-md-preview v-if="openReview" :text="choiceNews.context"/>
    </el-dialog>
  </div>
</template>

<script>
  import { listNews, getNews, delNews, addNews, updateNews } from '@/business/api/news'



  export default {
    name: 'News',
    comments: {
    },
    data() {
      return {
        // 遮罩层
        loading: true,
        // 选中数组
        ids: [],
        // 非单个禁用
        single: true,
        // 非多个禁用
        multiple: true,
        // 显示搜索条件
        showSearch: true,
        // 总条数
        total: 0,
        // 新闻列表表格数据
        newsList: [],
        // 弹出层标题
        title: '',
        // 是否显示弹出层
        open: false,
        // 查询参数
        queryParams: {
          pageNum: 1,
          pageSize: 10,
          title: null
        },
        // 表单参数
        form: {},
        // 表单校验
        rules: {},
        choiceNews: null,
        openReview: false
      }
    },
    created() {
      this.getList()
    },
    methods: {
      reviewNews(news) {
        this.choiceNews = news
        this.openReview = true;
        this.title = this.choiceNews.title
      },
      // v-md-editor 文件上传
      handleUploadImage(event, insertImage, files) {
        // console.log(files);
        // 上传
        for (let i = 0; i < files.length; i++) {
          this.crud.upload(files[i], "image/vMdEditor/").then(res => {
            // 获取返回数据
            let data = res.data.data;
            // 添加图片到内容
            insertImage({
              url: data.url,
              desc: data.name
            });
          });
        }
      },
      getDate() {
        var now = new Date();
        var year = now.getFullYear(); //得到年份
        var month = now.getMonth(); //得到月份
        var date = now.getDate(); //得到日期
        let hour = now.getHours();
        let minute = now.getMinutes();
        let second = now.getSeconds();
        month = month + 1;
        month = month.toString().padStart(2, "0");
        date = date.toString().padStart(2, "0");
        var defaultDate = `${year}-${month}-${date} ${hour}:${minute}:${second}`;//
        return defaultDate;
      },
      /** 查询新闻列表列表 */
      getList() {
        this.loading = true
        listNews(this.queryParams).then(response => {
          this.newsList = response.rows
          this.total = response.total
          this.loading = false
        })
      },
      // 取消按钮
      cancel() {
        this.open = false
        this.reset()
      },
      // 表单重置
      reset() {
        this.form = {
          id: null,
          title: null,
          createTime: null,
          sort: null,
          context: null
        }
        this.resetForm('form')
      },
      /** 搜索按钮操作 */
      handleQuery() {
        this.queryParams.pageNum = 1
        this.getList()
      },
      /** 重置按钮操作 */
      resetQuery() {
        this.resetForm('queryForm')
        this.handleQuery()
      },
      // 多选框选中数据
      handleSelectionChange(selection) {
        this.ids = selection.map(item => item.id)
        this.single = selection.length !== 1
        this.multiple = !selection.length
      },
      /** 新增按钮操作 */
      handleAdd() {
        this.reset()
        this.open = true
        this.form.createTime = this.getDate()
        this.form.context = ''
        this.title = '添加新闻列表'
      },
      /** 修改按钮操作 */
      handleUpdate(row) {
        this.reset()
        const id = row.id || this.ids
        getNews(id).then(response => {
          this.form = response.data
          this.open = true
          this.title = '修改新闻列表'
          if (this.form.context === null) {
            this.form.context = "";
          }
          // this.$nextTick(() => {
          //   this.$refs.mdEditor.refresh(this.form.context)
          // })
        })
      },
      /** 提交按钮 */
      submitForm() {
        this.$refs['form'].validate(valid => {
          if (valid) {
            if (this.form.id != null) {
              updateNews(this.form).then(response => {
                this.$modal.msgSuccess('修改成功')
                this.open = false
                this.getList()
              })
            } else {
              addNews(this.form).then(response => {
                this.$modal.msgSuccess('新增成功')
                this.open = false
                this.getList()
              })
            }
          }
        })
      },
      /** 删除按钮操作 */
      handleDelete(row) {
        const ids = row.id || this.ids
        this.$modal.confirm('是否确认删除新闻列表编号为"' + ids + '"的数据项？').then(function() {
          return delNews(ids)
        }).then(() => {
          this.getList()
          this.$modal.msgSuccess('删除成功')
        }).catch(() => {
        })
      },
      /** 导出按钮操作 */
      handleExport() {
        this.download('business/news/export', {
          ...this.queryParams
        }, `news_${new Date().getTime()}.xlsx`)
      }
    }
  }
</script>
